CN107507091A - Enhanced data Right protection method based on block chain and intelligent contract - Google Patents
Enhanced data Right protection method based on block chain and intelligent contract Download PDFInfo
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- CN107507091A CN107507091A CN201710798216.0A CN201710798216A CN107507091A CN 107507091 A CN107507091 A CN 107507091A CN 201710798216 A CN201710798216 A CN 201710798216A CN 107507091 A CN107507091 A CN 107507091A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q40/00—Finance; Insurance; Tax strategies; Processing of corporate or income taxes
- G06Q40/04—Trading; Exchange, e.g. stocks, commodities, derivatives or currency exchange
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q20/00—Payment architectures, schemes or protocols
- G06Q20/38—Payment protocols; Details thereof
- G06Q20/40—Authorisation, e.g. identification of payer or payee, verification of customer or shop credentials; Review and approval of payers, e.g. check credit lines or negative lists
- G06Q20/405—Establishing or using transaction specific rules
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
Abstract
The invention belongs to technical field of data security, specially a kind of enhanced data Right protection method based on block chain and intelligent contract.Step of the present invention includes：Data owner, which submits to data attribute and policy attribute, is deployed in the intelligent contract of block chain to issue data；Other users are circulated as data assignee, and as parameter call, the intelligent contract carries out circulation application to attribute, after intelligent contract judges whether application is legal automatically according to the policy attribute of data, returns to application result；If the circulation attribute of data assignee is legal, the circulation licensing of intelligent contract mandate generation is obtained；Conversely, intelligent contract will judge application failure.Application block chain technology of the present invention, protects the rights and interests of data owner, and equitably accepts the application of each data assignee；The stability of a system is improved simultaneously, the dependence to third party authoritative institution during data Right protection is eliminated, just, transparent, believable performing environment is provided for the data process of circulation.
Description
Technical field
The invention belongs to technical field of data security, specially a kind of enhanced data based on block chain and intelligent contract
Right protection method.
Background technology
In recent years, as the fast development of the Internet information techniques such as big data analyzes, data mining, mass data are more next
More paid attention to, and gradually effectively utilized by all trades and professions, such as improved Consumer's Experience and precisely launch user advertising, by medical big
Data precognition disease etc..The application of big data technology at present has started to penetrate into the every aspect of society, including business, medical treatment,
The fields such as government, education, economy, humanity, amusement, science and technology.Enterprise or individual can be by big data technologies from initial data
More useful informations are obtained, make data more and more valuable while also more and more rare.Therefore, mass data starts to be listed
Circulation and opening and shares, people urgently want to obtain more data from some mechanisms or Data Market by data circulation.
With the development of big data technology, the value of data can only be given full play to by data flow generalist.Data circulate
Refer to it is a kind of by data by sharing or buying and selling the behavior changed between Different Individual or tissue, can optimize allocation of resources and
Realize data value.Before data flow pass-out is existing, mass data is stored in the server of each mechanism and enterprise, forms number
According to isolating, this restrict the acquisition of big data value and the generation of benefit.Therefore, data circulation is that big data produces social value
With the basis of commercial value, and big data technical research, application innovation and the basis of industry development.
The subject matter that data circulate as data, the rights and interests that its owner enjoys need to be cut in the data process of circulation
Real protection.Data Right protection strategy needs to be formulated by data owner, to provide data assignee user to data
Access right and other pacta conventas.These rights and interests include the rights and interests that limitation does not allow to obtain the blacklist identity of data, limitation
Allow the rights and interests for obtaining the white list identity of data, limit the rights and interests of data circulation price, limit the rights and interests of data currency,
The rights and interests of data sampling rate are limited, the rights and interests of data renewal frequency is limited and limits rights and interests of penalty etc..Data rights and interests are protected
Protection mechanism is improper to directly influence the implementation of data circulation, and produces a series of rights and interests disputes and other problem of data safety.
It is external since 2008 to set up successively as the demand optimized allocation of resources and realize data value is increasing
Numerous data circulation market, such as Factual, InfoChimps, DataStreamX etc..By the end of the year 2016, China is also
Through having set up individual data circulation market more than 30, including Kweiyang big data exchange, Shanghai Data trade center etc..The data of main flow
Flowthrough mechanism generally comprises three roles：Data owner, data assignee and data circulation market.Wherein, data owner
Data commission circulation market is subjected to listed circulation, data assignee obtains data from circulation market.Therefore, data circulation mesh
It is preceding generally to be supervised and performed by the third-party institution of circulation both sides' trust.However, the problem of data Right protection, is but still
Do not solve thoroughly.On the one hand, its data is not energetically put into data circulation market by data owner at present, and reason is these
Data Market lacks a kind of automatic fair mechanism to protect their rights and interests, and e.g., data owner still can not effectively limit at present
The identity of assignee processed, this may make its business competitor obtain data also by circulation, and then reveal the merchant of itself
It is close.On the other hand, data assignee can worry that the circulation application of oneself is treated by unfairness, and e.g., data owner may root
According to the random change data circulation price of the identity in market or assignee.Although data circulation market can also be used as one credible the
Tripartite operates, but when there is the circulation application of many complexity simultaneously, the problem of producing overload.Current flowthrough mechanism
In, data owner can also submit simple circulation clause and strategy to be entrusted to Data Market and perform, but these strategies are general
Natural language is based on, and the ambiguity of natural language can cause circulation market when judging whether circulation application is legal, as a result
Will not be definitely just.It is therefore proposed that an automatic fair data flowthrough mechanism realizing data Right protection is and its necessary
's.
Block chain technology is originating from end to end network, data encryption technology and database technology etc., conduct at first in 2008
The Floor layer Technology of bit coin is by middle acute hearing in bit coin white paper《Bit coin：A kind of electronic cash system of point-to-point》In carry
Go out.Bit coin is first encryption money-system based on block chain in the world.Block chain refers to disclosed decentralization
Distributed account book, can solve the problems, such as the problems such as honeysuckle or transaction forgery, using block linked data structure data storage, and pass through
Cryptological technique ensure that data transfer and access safety.In addition, block chain technology is using distributed node common recognition algorithm next life
Into with update the data, each transaction will pass through the whole network node checking and confirmation.Block chain account book can be recorded in network
All data exchange history, make process and impartial result transparent, traceable.Bit coin etc. encrypts the Floor layer Technology of money-system
The also referred to as technology of block chain 1.0.
2013, with the appearance in ether mill, block chain 1.0 was extended to 2.0 versions, turns into a kind of and utilizes computer journey
Sequence language come write program composition intelligent contract and operation data distributed basis framework with calculate normal form.Based on block chain
2.0 system allows user to dispose intelligent contract or the application of other decentralizations on block chain, allows these to apply in area
Under the guarantee of block chain technology, liberally perform automatically.Block chain technology is also applied to finance, bill, bank settlement, stock at present
The various fields such as ticket equity share circulation, public credit certification, law, insurance, have a wide range of applications scene.
The concept of intelligent contract proposed in 1994 by Ni Kesabo, refer to computer language substitute legal language come
The contract of clause is recorded, it uses a series of formal definition of the mathematics and programming rights and duties of contract both sides, once it is special
Fixed transaction triggering, so that it may be performed automatically.Due to lacking the support of system and technology at that time, until going out for ether mill in 2013
The theory of intelligent contract is now just realized, intelligent contract can be performed under the block chain environment of credible decentralization.It is based on
The intelligent contract of block catenary system not only has the advantages such as itself possessed cost efficiency, can also avoid malicious act to it
The interference normally performed, there are automation, decentralization, the characteristic as a result determined, once it is deployed on block chain, would not
Stop, this also ensured its storage, read, perform etc. process it is just it is transparent, record it is traceable, can not be tampered.
Also there are some patented inventions of research block chain on data Right protection the country.《Data power based on block chain
Beneficial guard method》A data circulation application system based on block chain is provided, data owner needs oneself for flow
Logical data mining intelligence contract, is applied circulating by assignee user.This method will to the professional knowledge of data owner
Ask higher, make the availability of system reduce, adds somewhat to human cost.Meanwhile this method needs to need to be each
The single intelligent contract of data mining one of circulation, also consumes storage and the Internet resources of block catenary system, is unfavorable for pipe
Reason and extension.In addition, the system only protects the rights and interests that data owner limited assignee's identity and to price limit of circulating
Rights and interests, the authentication function of licensing is not provided, there is certain limitation.This method is the increasing based on block chain and intelligent contract
Strong type data Right protection method, the mechanism of all data Right protections can be used as service to write intelligent contract and externally provide.
Specifically, data owner can call intelligent contract issue data and checking licensing, assignee user also to call the intelligence
Contract application currency data and acquisition circulation licensing.In addition, this method, which is data owner, protects more perfect rights and interests, remove
Cover《Data Right protection method based on block chain》In mention limitation blacklist identity rights and interests and restricted circulation valency
The rights and interests of lattice, this method also include the rights and interests of limitation white list identity, limit the rights and interests of data currency, limit data sampling
The rights and interests of rate, limit the rights and interests of data renewal frequency, and the rights and interests in limitation penalty section etc..
The content of the invention
It is an object of the invention to provide a kind of automatic execution, the just transparent enhancing based on block chain and intelligent contract
Type data Right protection method.
Enhanced data Right protection method provided by the invention based on block chain and intelligent contract, is concretely comprised the following steps：
（1）The user for possessing data determines to circulate its data for data as data owner；
（2）The data rights and interests that data owner user protects according to their needs formulate the circulation strategy of the data, and are determined
Justice is policy attribute, and data attribute is together as the intelligent contract of parameter call block chain, by data publication；
（3）Other users for wanting to obtain the data by circulating are used as data assignee, are formulated and applied according to the demand of itself
The circulation attribute of the data, and as the intelligent contract on parameter call block chain, carry out circulation application；
（4）After data assignee user submits circulation application, intelligent contract will be held automatically according to the circulation strategy of institute's request for data
OK, and application result is returned；If the circulation attribute of assignee is legal, it can obtain the circulation for being generated and being authorized by intelligent contract
Licensing, conversely, intelligent contract will return to application failure；
（5）When assignee user carries licensing progress data circulation, data owner user can be by the licensing and assignee
Identity verify whether licensing legal as parameter call intelligence contract, intelligent contract is by auto-returned the result.
From said process, due to completing data register using the intelligent contract being deployed on block chain, stream is judged
Logical application, generate simultaneously ticket for authorization and verify the process of licensing, ensure that the process of data owner's Right protection can
To be performed under a credible transparent, just automatic environment, all application records and result can not be maliciously tampered.Data are gathered around
The person's of having rights and interests it also avoid the ambiguity of natural language deciphering by program language expression so that the result determination for application of circulating,
Embody the reliability and fairness of this method.
In the present invention, the circulation of described data refers to, using data as subject matter, be turned data by the user for possessing data
Move the process to the assignee user for receiving data, negotiable data include government, medical treatment, finance, enterprise, electric business, the energy,
The plurality of classes such as traffic, commodity, consumption, education, social activity.
In the present invention, described block catenary system is the distributed account book of a disclosed decentralization, is known together by network
Mechanism ensures that data can not be deleted and change, and the thus execution for data Right protection provides just believable calculating ring
Border.
In the present invention, described circulation strategy is formulated by data owner, including blacklist strategy, white list strategy, stream
Logical price strategy, currency strategy, data sampling rate strategy, data renewal frequency strategy, circulation penalty strategy etc., data
One or more strategy may be selected to protect corresponding rights and interests in owner.
In the present invention, described policy attribute by data circulate strategy produce, can be used as issue data when parameter.Strategy
Attribute includes blacklist list, and white list list, price range, data circulation time interval, data sampling rate section, data are more
New frequency separation, circulation penalty section etc..Wherein blacklist list refers to never allowing to circulate as defined in data owner
Assignee's list of data is obtained, white list list refers to the assignee's list for always allowing currency data, price range rule
Determined circulation price range, the currency section define assignee can circulate obtain data time interval, sample rate
Section is defined by sampling the data total amount section obtained, and renewal frequency section refers to the frequency zones that data can be updated
Between, penalty section refers to assignee in request for data, it is necessary to the penalty amount of money section paid.
In the present invention, described data attribute includes the unique identifier of data, the identity of data owner and data
Description information.Specifically, data specifying-information includes data source, data cover region, data label, data format etc..
In the present invention, described intelligent contract can be used as Right protection system deployment on block chain.The function of the system
Including data register, circulation application judges, licensing generates and license validation.By the data attribute for reading in data owner
Data publication is carried out with policy attribute, the data by reading in assignee user circulate attribute to carry out application judgement, pass through into
The circulation application result of work(generates and ticket for authorization, by licensing and carries the identity information of licensing user to verify
Licensing.Intelligent contract be one section be deployed on block chain can automatic running program, its code and implementing result can not be usurped
Change and delete, it is thus automatic and reliably protect the rights and interests of data owner, and ensure that the application result public affairs of data circulation
It is just credible.
In the present invention, though described data circulation attribute specifies assignee to use by data owner user when issuing data
The classification that family need to provide, but occurrence need to by data assignee user according to the demand of its own circulate apply when as parameter
Intelligent contract is triggered automatically to be judged.
In the present invention, the fixed circulation strategy execution by intelligent contract according to data owner of described data flow official under county magistrate who administers lawsuit, etc., it is
The process of one strategy combination.Specifically, intelligent contract can first judge whether blacklist strategy meets, if assignee user is black
List list, then application failure is directly returned to, conversely, continuing executing with next white list strategy.If assignee user is in white name
Single-row table, then directly generate and ticket for authorization is to user, conversely, intelligent contract can perform other remaining plans successively automatically
Slightly：Circulation price strategy, currency strategy, data sampling rate strategy, data renewal frequency strategy, circulate penalty strategy.
And other tactful execution are the processes of a refusal covering, ungratified strategy even be present, the assignee user will apply
Failure, conversely, circulation licensing will be awarded in he.
In the present invention, described circulation licensing is the exclusive evidence that data circulation performs.Data assignee user passes through
After submitting circulation attribute to trigger intelligent contract automatic running, if intelligent contract judges that application is legal, by the generation of intelligent contract simultaneously
License to user to permit to carry out the voucher of data circulation, its content will according to the circulation attribute of assignee user and application time etc.
Plain dynamic generation, and signed and authorized by intelligent contract.
In the present invention, data owner can be permitted the identity of assignee with what it was provided when actually carrying out data circulation
It can demonstrate,prove together as parameter call intelligence contract, be to judge licensing according to the history application record of block chain by intelligent contract
It is no legal.
Data Right protection method provided by the invention, can be that user brings following benefit：
1st, data circulation strategy is performed automatically.The intelligent contract for performing data Right protection is operated on block chain, and data possess
Person calls the intelligent contract to carry out data publication and license validation automatically, and assignee user calls the intelligent contract to carry out automatically
Circulation application judges and license obtainment, and whole process is without manual operation, quickness and high efficiency and accuracy height.
2nd, the implementation procedure of method is just transparent.Because intelligent contract is run on credible transparent block catenary system,
Its result performed can rely on node verification of the network common recognition mechanism by the whole network, it is virtually impossible to be manipulated or distort, therefore
Data circulation both sides can trust circulation application result and license authentication result that intelligent contract provides, be not in because of supervision
Dispute caused by ineffective or program implementing result mistake.
3rd, intervened without third party authoritative institution.The block catenary system for performing intelligent contract is that the end of a decentralization is arrived
Network is held, the block chain node of the whole network ensures the correct execution of contract, implementing result and note by cryptography and mathematical verification
Record can not be tampered, and monitored and managed without third party.
4th, the record of circulation application can trace.The operation result of intelligent contract is stored permanently in center in this method
It in the block catenary system of change, can not maliciously be added, distort or delete, all certification applications of circulation licensing and checking
The record of access can be traced.
5th, relatively low is required to the professional knowledge for the both sides that circulate.This method can be used as service to write intelligent contract and externally carry
For the professional knowledge without circulate both sides' study block chain and intelligent contract.Specifically, data owner can be by simple data
Property value and policy attribute value call intelligent contract to issue data as input, and assignee user will circulate demand as circulation
Attribute calls intelligent contract application currency data.In addition, data owner or other circulation markets can be come from by intelligent contract
Dynamic checking circulation licensing.
6th, Right protection method and strategy will not be understood by mistake and maliciously distort.Data circulation strategy passes through program language
Intelligent contract is deployed on block chain, ensure that all data thereon and record can not be by malice by the common recognition mechanism of block chain
Distort.Further, since qualitative features, intelligent contract avoid the ambiguity of natural language, ensure that we programming language really
Right protection method and strategy in method will not be understood by mistake and malice is distorted, and ensure that the justice of the data process of circulation is reliable
Property.
7th, shielded rights and interests coverage rate is wider, and the flow of Right protection is more comprehensively.This method is removed to be carried for data assignee
Outside for circulation application function, also provide issue data for data owner and verify the function of licensing.In addition, this method is also
Data owner protects more rights and interests, includes the rights and interests of limitation blacklist identity, limits the rights and interests of white list identity, limit
The rights and interests of data circulation price, the rights and interests of data currency are limited, limit the rights and interests of data sampling rate, limit data renewal frequency
The rights and interests of rate and rights and interests of restriction penalty etc..
Brief description of the drawings
Fig. 1 is that the process of the enhanced data Right protection method based on block chain and intelligent contract illustrates.
Embodiment
The present invention is described in detail below in conjunction with the accompanying drawings.
Such as Fig. 1, owners of the user A as data, plan to be used to circulate by its data, it, which is enjoyed, needs data to be protected
Rights and interests.User B and C obtains the data as the assignee for needing data, plan application circulation.Before this, in this method
Intelligent contract namely Right protection system has been deployed on block chain, and is stored on k-th of block of block catenary system.This is
System includes four functions：The data publication function and the function of license validation provided for data owner, is data assignee
The function that the circulation application of offer judges and licensing is generated and authorized.This method concretely comprises the following steps：
1st, for user A as data owner, the data rights and interests protected according to their needs formulate the circulation strategy of the data, and will
It switchs to policy attribute, and data attribute together as the intelligent contract of parameter call block chain, request for data issue.Wherein,
Data attribute includes data ID（The unique mark of data）, data owner ID（The unique identities of owner）, data description（Number
According to source, data cover region, data label, data format etc.）Include blacklist list Deng, policy attribute, white list list,
Price range, the currency section, sample rate section, renewal frequency section, penalty section etc.；
2nd, intelligent contract determines whether existing identical data issue according to the record on block chain, if data with existing is issued,
Issue failure is returned to data owner, is issued successfully conversely, returning；
3rd, user B and user C fills in the circulation attribute for applying for the data according to the demand of itself, and incite somebody to action as assignee user
It carries out circulation application as the intelligent contract on parameter call block chain.Wherein, the circulation category submitted needed for data assignee
Property classification is specified by data owner.Circulation attribute includes the identity of assignee, desired data price, what expected data circulated
The data volume that time, desired data sampling rate namely circulation obtain, desired data renewal frequency, and affordable promise breaking
Gold etc.；
4th, the data circulation strategy that intelligent contract is formulated according to data owner carries out circulation application and judged.Because user B is provided
Circulation attribute it is legal（The implementing result of strategy combination is to pass through）, intelligent contract will be its generation and ticket for authorization.User C
The circulation attribute of offer is illegal（Such as, user C identity is in blacklist list）, intelligent contract, which will return, applies for failure；
5th, when assignee user carries licensing and carries out data circulation, data owner user A is by the licensing and assignee
Identity verifies whether licensing is legal as parameter call intelligence contract；
6th, intelligent contract judges whether licensing is legal according to the circulation application record of block chain.If licensing is legal, to number
Return and be proved to be successful according to owner, conversely, returning to authentication failed.
In the present invention, data owner need not voluntarily write intelligent contract, cost that greatly time and manpower is saved.
The circulation strategy that data owner is formulated is stored in the form of policy attribute on block chain, it is ensured that is weighed without third party
Under the supervision of prestige mechanism, the automatic Right protection method for performing data.
In the present invention, to avoid identity from forging, the identity of data circulation both sides is both needed to be authenticated just allowing to use in advance
The system.
In the present invention, assignee user carries licensing and carries out actual data circulation, and data owner permits in checking
Demonstrate,prove it is legal after, the process of follow-up data circulation and data conversion can be completed by other intelligent contracts or flowthrough mechanism.
In the present invention, circulation licensing is the exclusive evidence that data circulation performs.Its content is according to the stream of assignee user
The logical key element dynamic generation such as attribute and application time, and signed and authorized by intelligent contract.
In the present invention, because intelligent contract of the protection based on block catenary system of data rights and interests performs automatically, block linkwork
System possessed decentralization in itself, calculates credible, and the advantages that data and result can not be maliciously tampered can ensure the present invention
In data Right protection method it is just it is transparent, do not need third party authoritative institution supervision environment in perform, ensure that number
According to the high efficiency, reliability and fairness of circulation.
Claims (9)
- A kind of 1. enhanced data Right protection method based on block chain and intelligent contract, it is characterised in that concretely comprise the following steps：（1）The user for possessing data determines to circulate its data for data as data owner；（2）The data rights and interests that data owner user protects according to their needs formulate the circulation strategy of the data, and are determined Justice is policy attribute, and data attribute is together as the intelligent contract of parameter call block chain, by data publication；（3）Other users for wanting to obtain the data by circulating are used as data assignee, are formulated and applied according to the demand of itself The circulation attribute of the data, and as the intelligent contract on parameter call block chain, carry out circulation application；（4）After data assignee user submits circulation application, intelligent contract will be held automatically according to the circulation strategy of institute's request for data OK, and application result is returned；If the circulation attribute of assignee is legal, it can obtain the circulation for being generated and being authorized by intelligent contract Licensing, conversely, intelligent contract will return to application failure；（5）When assignee user carries licensing progress data circulation, data owner user can be by the licensing and assignee Identity verify whether licensing legal as parameter call intelligence contract, intelligent contract is by auto-returned the result；Wherein, described data circulation refers to, using data as subject matter, data are transferred into receiving by the user for possessing data The process of the assignee user of data, negotiable data include government, medical treatment, finance, enterprise, electric business, the energy, traffic, business Product, consumption, education, social various classifications；Described block chain is the distributed account book of a disclosed decentralization, knows together mechanism by network to ensure that data can not It is deleted and changes.
- 2. guard method according to claim 1, it is characterised in that described circulation strategy is formulated by data owner, Including：Blacklist strategy, white list strategy, circulation price strategy, currency strategy, data sampling rate strategy, data renewal Frequency policies, circulate penalty strategy；One or more strategy may be selected to protect corresponding rights and interests in data owner.
- 3. guard method according to claim 1 or 2, it is characterised in that described policy attribute is circulated tactful by data Produce, as issue data when parameter；Policy attribute includes：Blacklist list, white list list, price range, data flow Logical time interval, data sampling rate section, data renewal frequency section, circulation penalty section.
- 4. guard method according to claim 3, it is characterised in that described data attribute includes the unique mark of data The description information of symbol, the identity of data owner and data；Data specifying-information includes data source, data cover region, number According to label, data format.
- 5. according to the guard method described in claim 1,2 or 4, it is characterised in that described intelligent contract is as Right protection System deployment is on block chain；Its function includes data register, circulation application judges, licensing generates and license validation；It is logical Cross the data attribute for reading in data owner and policy attribute carries out data publication, circulated by the data for reading in assignee user Attribute carries out application judgement, is generated and ticket for authorization by successfully circulating application result, passes through licensing and carrying The identity information of licensing user verifies licensing.
- 6. guard method according to claim 5, it is characterised in that described data circulation attribute is used by data owner Family specifies assignee user to need the classification submitted when issuing data, its concrete numerical value by data assignee user according to its from The demand of body triggers intelligent contract as parameter when circulating and applying and judged automatically.
- 7. according to the guard method described in claim 1,2,4 or 6, it is characterised in that described circulation licensing is data flow The logical exclusive evidence performed；After data assignee user is by submitting circulation attribute to trigger intelligent contract automatic running, if intelligence Contract judges that application is legal, then is generated by intelligent contract and license to user and permit to carry out the voucher of data circulation, its content root According to the key element dynamic generation such as the circulation attribute of assignee user and application time, and signed and authorized by intelligent contract.
- 8. guard method according to claim 7, it is characterised in that described data flow official under county magistrate who administers lawsuit, etc. it is fixed by intelligent contract according to The circulation strategy execution of data owner, it is the process of a strategy combination；Intelligent contract first judges whether blacklist strategy is full Foot, fail if assignee user in blacklist list, directly returns to application, conversely, continuing executing with next white list strategy； If assignee user in white list list, directly generates and ticket for authorization is to user, conversely, intelligent contract is held successively automatically Other remaining strategies of row：Circulation price strategy, currency strategy, data sampling rate strategy, data renewal frequency strategy, stream Logical penalty strategy；Other tactful execution are the processes of a refusal covering, ungratified strategy even be present, the assignee User will apply failing, conversely, circulation licensing will be awarded in he.
- 9. guard method according to claim 1, it is characterised in that data owner actually carry out data circulation when, By the identity of assignee and its licensing provided together as parameter call intelligence contract, by intelligent contract according to block chain History application record judges whether licensing is legal.
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| CN108600975A (en) * | 2018-04-26 | 2018-09-28 | 深圳市威宇智通科技有限公司 | Flow sharing method and its system |
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